Mellow Mushroom shut down June 4 after less than four years in the market. A worker answering the phone at the franchised pizzeria concept last week confirmed the closure but offered no additional information. The manager, she said, was in a meeting and unavailable for comment.

The failure of Mellow Mushroom follows similar fates of its predecessors at this corner: Toucan’s, Bootie’s, Serranos Salsa Company and Bako’s.